package io2;

import java.io.*;

public class CopyDemo3Buffered {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("img10.jpg");
        BufferedInputStream bis = new BufferedInputStream(fis);
        FileOutputStream fos = new FileOutputStream("img10_cp4.jpg");
        BufferedOutputStream bos = new BufferedOutputStream(fos);

        long start = System.currentTimeMillis();
        int d;
        while ((d=bis.read())!=-1){
            bos.write(d);
        }
        long end = System.currentTimeMillis();
        System.out.println("写出完毕，耗时:"+(end-start)+"ms");
        bos.close();
        bis.close();














//        FileInputStream fis = new FileInputStream("img10.jpg");
//        BufferedInputStream bis = new BufferedInputStream(fis);
//        FileOutputStream fos = new FileOutputStream("img10_cp3.jpg");
//        BufferedOutputStream bos = new BufferedOutputStream(fos);
//        long start = System.currentTimeMillis();
//        int d ;
//        while ((d= bis.read())!=-1){
//            bos.write(d);
//        }
//        long end = System.currentTimeMillis();
//        System.out.println("写出完毕，耗时:"+(end-start)+"ms");
//        bis.close();
//        bos.close();
    }
}
